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S20910 Stainless Steel vs. ASTM Grade HT Steel

Both S20910 stainless steel and ASTM grade HT steel are iron alloys. They have 76% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is S20910 stainless steel and the bottom bar is ASTM grade HT steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230 to 290
150
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 14 to 39
4.6
Fatigue Strength, MPa 310 to 460
130
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
76
Tensile Strength: Ultimate (UTS), MPa 780 to 940
500
Tensile Strength: Yield (Proof), MPa 430 to 810
270

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 460
400
Maximum Temperature: Mechanical, °C 1080
1010
Melting Completion (Liquidus), °C 1420
1390
Melting Onset (Solidus), °C 1380
1340
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 13
12
Thermal Expansion, µm/m-K 16
15

Otherwise Unclassified Properties

Base Metal Price, % relative 22
31
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 4.8
5.4
Embodied Energy, MJ/kg 68
76
Embodied Water, L/kg 180
190

Common Calculations

PREN (Pitting Resistance) 34
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 260
19
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 1640
180
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 28 to 33
18
Strength to Weight: Bending, points 24 to 27
18
Thermal Diffusivity, mm2/s 3.6
3.2
Thermal Shock Resistance, points 17 to 21
12

Alloy Composition

Carbon (C), % 0 to 0.060
0.35 to 0.75
Chromium (Cr), % 20.5 to 23.5
15 to 19
Iron (Fe), % 52.1 to 62.1
38.2 to 51.7
Manganese (Mn), % 4.0 to 6.0
0 to 2.0
Molybdenum (Mo), % 1.5 to 3.0
0 to 0.5
Nickel (Ni), % 11.5 to 13.5
33 to 37
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 2.5
Sulfur (S), % 0 to 0.030
0 to 0.040
Vanadium (V), % 0.1 to 0.3
0